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What Do You Know About Male Pattern Baldness?

Some men cope with their inevitable loss of hair by wearing a cap most of the time. Some don an artificial hairpiece to cover their loss. Still others shave their whole head. There's more to know about baldness than toupees, though. Learn more by taking this quiz.

1. An average scalp has how much hair?

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People with brown or black hair have the most, at 155,000 strands. Blond-haired people have about 140,000 strands. Redheads have the fewest, at 85,000 strands.

Each strand grows at a rate of about a half-inch a month. After finishing its growth, the strand will rest, then fall out. A new strand begins growing within 6 months. Baldness occurs when the new strand fails to begin growing, or when the new hair strand is smaller and finer than the ones that grew from the follicle before that.

A. 30 daysB. 1 yearC. 2 to 5 yearsD. 7 years

4. What percentage of men has lost hair by age 50?

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By the time men turn 60, more than two-thirds of them are either bald or have some hair loss.

A. 10%B. 30%C. 45%D. 50%

5. What is the cause of male pattern baldness?

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Researchers don't completely understand the balding process, but do know that the male hormone testosterone plays an important role. Heredity also determines whether a man will lose some or all of his hair, and when. The medical term for male pattern baldness is androgenetic alopecia.

A. HeredityB. TestosteroneC. Ultraviolet raysD. A and B

6. Where does hair loss usually start?

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The process is gradual, with the hairline moving back slowly. The hairline moves back into an M shape, and the crown begins to thin. Eventually, only hair around the sides of the head is left. Women also may have hair loss as they age, but the pattern is an overall thinning of the hair. The airline does not recede.

A. At the back of the neckB. At the hairlineC. At the crownD. Above the ears

7. Besides heredity, what can cause hair loss?

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A serious illness or major surgery can result in hair loss. Hormonal problems such as an over- or underactive thyroid can lead to hair loss. Medicines that can cause hair loss include anticoagulants, chemotherapy medicines, gout medicine, birth control pills, and antidepressants. Too much vitamin A can cause hair loss.
Hair loss may also be a sign of diabetes or the autoimmune disease lupus. In people with another autoimmune disease called alopecia areata, the immune system attacks the hair follicles, resulting in widespread hair loss on the head and body. See your healthcare provider if you lose hair in patches, if it breaks off, if your scalp is red, painful, or itchy, or if the hair loss is rapid.

The prescription medicine minoxidil is a topical treatment that works for some men. Other men may be helped by the oral medicine finasteride. Hair grafts can be done, surgically moving hair from one part of the head to the balding area. But all of these treatments are expensive, and the hair grafts are painful. For most men, baldness is permanent. Men should beware of any baldness "cures" marketed over the Internet or elsewhere. The FDA has approved the only medicines available for hair loss (minoxidil and finasteride). All other so-called remedies or treatments for baldness should be suspect. All men who are bald or balding should wear a hat when outdoors to protect the scalp from UV exposure and possible skin cancer.

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